When jumping, a flea rapidly extends its legs, reaching a takeoff speed of 1.0 m/s over a distance of 0.50 mm find acceleration. how long does it take the flea to leave the ground after it begins pushing off?

Solution:

In this question we have given,

initial velocity,u = 0

final velocity, v = 1m/s

displacement =.5mm             (Because 1mm=.001m)

We have to find

1.acceleration

2. Time

1. we know third equation of motion is given as,

............(1)

Put values of v,u and s in equation (1)

2. We know First equation of motion is given as

......................(2)

put values of v, u and a in equation(2)

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thermal energy is the answer